﻿using System;
using System.Configuration;
using System.Net;
using System.Net.Mail;
using System.Web.Mvc;
using System.Web.Security;
using Coticula.Web.Models;

namespace Coticula.Web.Controllers
{
    public class AccountController : Controller
    {

        //
        // GET: /Account/LogOn

        public ActionResult LogOn()
        {
            if (User.Identity.IsAuthenticated)
            {
                return View("AccessDenied");
            }
            return View();
        }

        //
        // POST: /Account/LogOn

        [HttpPost]
        public ActionResult LogOn(LogOnModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                if (Membership.ValidateUser(model.UserName, model.Password))
                {
                    FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
                    if (Url.IsLocalUrl(returnUrl) && returnUrl.Length > 1 && returnUrl.StartsWith("/")
                        && !returnUrl.StartsWith("//") && !returnUrl.StartsWith("/\\"))
                    {
                        return Redirect(returnUrl);
                    }
                    else
                    {
                        return RedirectToAction("Index", "Home");
                    }
                }
                else
                {
                    ModelState.AddModelError("", "The user name or password provided is incorrect.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/LogOff

        public ActionResult LogOff()
        {
            FormsAuthentication.SignOut();

            return RedirectToAction("Index", "Home");
        }

        //
        // GET: /Account/Register

        public ActionResult Register()
        {
            return View();
        }

        //
        // POST: /Account/Register

        [HttpPost]
        public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                // Attempt to register the user
                MembershipCreateStatus createStatus;
                Membership.CreateUser(model.UserName, model.Password, model.Email, null, null, true, null, out createStatus);

                if (createStatus == MembershipCreateStatus.Success)
                {
                    FormsAuthentication.SetAuthCookie(model.UserName, false /* createPersistentCookie */);
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    ModelState.AddModelError("", ErrorCodeToString(createStatus));
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/ChangePassword

        [Authorize]
        public ActionResult ChangePassword()
        {
            return View();
        }

        //
        // POST: /Account/ChangePassword

        [Authorize]
        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {

                // ChangePassword will throw an exception rather
                // than return false in certain failure scenarios.
                bool changePasswordSucceeded;
                try
                {
                    MembershipUser currentUser = Membership.GetUser(User.Identity.Name, true /* userIsOnline */);
                    changePasswordSucceeded = currentUser.ChangePassword(model.OldPassword, model.NewPassword);
                }
                catch (Exception)
                {
                    changePasswordSucceeded = false;
                }

                if (changePasswordSucceeded)
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/ChangePasswordSuccess

        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }

        internal static bool SendEmail(MailAddress toAddress, string subject, string body)
        {
            string emailSmtpHost = ConfigurationManager.AppSettings["emailSMTPHost"];
            int emailSmtpPort = int.Parse(ConfigurationManager.AppSettings["emailSMTPPort"]);

            var message = new MailMessage
            {
                Subject = subject,
                Body = body
            };
            if (ConfigurationManager.AppSettings["emailAccount"] != null)
                message.From = new MailAddress(ConfigurationManager.AppSettings["emailAccount"]);
            message.To.Add(toAddress);

            using (var client = new SmtpClient(emailSmtpHost, emailSmtpPort))
            {
                client.UseDefaultCredentials = false;
                if (ConfigurationManager.AppSettings["emailAccount"] != null)
                    client.Credentials = new NetworkCredential(ConfigurationManager.AppSettings["emailAccount"], ConfigurationManager.AppSettings["emailPassword"]);
                else
                    client.Credentials = CredentialCache.DefaultNetworkCredentials;
                client.DeliveryMethod = SmtpDeliveryMethod.Network;
                client.Send(message);
            }

            return true;
        }

        //
        // GET: /Account/RecoverPassword

        public ActionResult RecoverPassword()
        {
            return View();
        }

        //
        // POST: /Account/RecoverPassword

        [HttpPost]
        public ActionResult RecoverPassword(RecoverPasswordModel model)
        {
            if (ModelState.IsValid)
            {
                var users = Membership.FindUsersByName(model.UserName);
                if (users.Count == 1)
                {
                    string email = users[model.UserName].Email;

                    string body = "This is new password to your account in http://dev.coticula.com" + Environment.NewLine;
                    string newPassword = users[model.UserName].ResetPassword();
                    body += newPassword + Environment.NewLine;
                    body += "Please change this password in system. For change pasword go to this link http://dev.coticula.com/Account/ChangePassword";
                    if (SendEmail(new MailAddress(email), "Recover password", body))
                    {
                        return RedirectToAction("RecoverPasswordSuccess");
                    }
                    else
                    {
                        ModelState.AddModelError("", "Can't send email to your address.");
                    }
                }
                else
                {
                    ModelState.AddModelError("", "The user name is incorrect.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/RecoverPasswordSuccess

        public ActionResult RecoverPasswordSuccess()
        {
            return View();
        }

        #region Status Codes
        private static string ErrorCodeToString(MembershipCreateStatus createStatus)
        {
            // See http://go.microsoft.com/fwlink/?LinkID=177550 for
            // a full list of status codes.
            switch (createStatus)
            {
                case MembershipCreateStatus.DuplicateUserName:
                    return "User name already exists. Please enter a different user name.";

                case MembershipCreateStatus.DuplicateEmail:
                    return "A user name for that e-mail address already exists. Please enter a different e-mail address.";

                case MembershipCreateStatus.InvalidPassword:
                    return "The password provided is invalid. Please enter a valid password value.";

                case MembershipCreateStatus.InvalidEmail:
                    return "The e-mail address provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidAnswer:
                    return "The password retrieval answer provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidQuestion:
                    return "The password retrieval question provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidUserName:
                    return "The user name provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.ProviderError:
                    return "The authentication provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                case MembershipCreateStatus.UserRejected:
                    return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                default:
                    return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            }
        }
        #endregion
    }
}
